MSCONFIG is there too. Start > Run > MSCONFIG > Ok.
Frankly, Winpatrol is better and it uses very little resources. You don't have to run it all the time and can just open it when needed. I swear by it because it tells you exactly where the programs are instead of making you guess. Besides that, if you let it run it will prevent items that you disabled from being installed again later. MSCONFIG and Defender can't do that.